《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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主办单位: 苏州混凝土水泥制品研究院
中国混凝土与水泥制品协会

主编 : 李建华
常务副主编 : 王春蓉
刊期 : 月刊
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E-mail : sccpitg@126.com
国内统一刊号(CN) : 32-1173/TU
国际标准刊号(ISSN) : 1000-4637
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混凝土研究

陶粒内养护超高性能混凝土（UHPC）的制备与性能研究

黄展魏1,2，王安辉1,2，张艳芳1,2，倪娇娇1,2，陈晓君1

2023年第10期

摘要

引用本文

摘要：针对超高性能混凝土（UHPC）因胶凝材料用量大、水胶比小导致的体积稳定性问题，采用0、5%、10%、15%、20%陶粒等体积取代细骨料，制备了一种陶粒内养护UHPC，研究了陶粒取代率对UHPC工作性、力学性能、体积稳定性的影响，并运用压汞法、XPS、SEM微观测试方法分析了陶粒对UHPC微观结构的影响。结果表明：陶粒在胶凝材料水化过程中因内部相对湿度差释放水分，促进了水化反应，提高了水化产物的数量，增加了结构的致密性，改善了UHPC的力学性能、体积稳定性和孔结构；但当陶粒超过一定掺量时，也会带来不利影响。 Abstract: Aiming at the volume stability problem of ultra-high performance concrete (UHPC) caused by large amount of cementitious materials and small water binder ratio, a ceramsite self-curing UHPC was prepared by using the volume method of 0, 5%, 10%, 15% and 20% ceramsite instead of fine aggregate. The influence of ceramsite on the workability, mechanical properties and volume stability of UHPC was studied. The microstructure of UHPC was analyzed by mercury injection method, XPS and SEM. The results show that the ceramsite releases water driven by the internal relative humidity difference in the hydration process of cementitious materials, which promotes the hydration reaction, improves the amout of hydration products, increases the compactness of structure, and improves the mechanical properties, volume stability and pore structure of UHPC. When the amount of ceramsite is high, it can bring adverse effects.

黄展魏,王安辉,张艳芳,等.陶粒内养护超高性能混凝土（UHPC）的制备与性能研究[J].混凝土与水泥制品,2023(10):1-5. HUANG Z W,WANG A H,ZHANG Y F,et al.Study on preparation and properties of ceramsite self-curing ultra-high performance concrete(UHPC) [J].China Concrete and Cement Products,2023(10):1-5.

船闸大体积混凝土抗裂性能提高试验研究

嵇旭红1，周泽聪2，*，潘利2，王育江2，王瑞2

2023年第10期

摘要

引用本文

摘要：为提升船闸大体积混凝土的抗裂性能，探究抗裂剂对混凝土综合性能的影响，研究了复掺矿物掺合料和抗裂剂条件下砂浆的水化放热、混凝土的工作性、力学性能及收缩变形，结合微观试验分析了抗裂剂对混凝土水化的影响，并进行了工程现场试验室应用。结果表明：抗裂剂能够推迟砂浆的水化放热速率峰值，降低砂浆的早期放热量和混凝土的早期强度，但对混凝土后期强度影响不大；抗裂剂能够有效补偿混凝土的收缩，在粉煤灰和矿粉双掺体系中掺入抗裂剂后，混凝土的28 d干燥收缩降低了38%；抗裂剂有效降低了水泥净浆28 d的孔隙率；该抗裂剂在工程现场试验室中应用效果良好。 Abstract: In order to improve the anti-cracking performance of mass concrete in ship locks and investigate the effect of anti-cracking agent on the comprehensive performance of concrete, the hydration heat release of mortar, workability, mechanical properties and shrinkage deformation of concrete under the conditions of compounding mineral admixture and anti-cracking agent were studied, and the effect of anti-cracking agent on the hydration of concrete was analyzed by combining the paste microscopic test, and the anti-cracking agent was applied in the engineering field laboratory. The results show that the anti-cracking agent can delay the peak rate of hydration heat release of mortar and reduce the early exothermic heat of mortar and early strength of concrete, but it has little effect on the later strength of concrete. The anti-cracking agent can effectively compensate for the shrinkage of concrete. In the fly ash and mineral powder double-mixing system, after mixing anti-cracking agent, the 28 d drying shrinkage of concrete is decreased by 38%. The anti-cracking agent can reduce the 28 d porosity of cement paste. The anti-cracking agent has been applied effectively in the engineering field laboratory.

嵇旭红,周泽聪,潘利,等.船闸大体积混凝土抗裂性能提高试验研究[J].混凝土与水泥制品,2023(10):6-10. JI X H,ZHOU Z C,PAN L,et la.Experimental study on the improvement of cracking resistance of mass concrete in ship locks[J].China Concrete and Cement Products,2023(10):6-10.

钙铝石（C12A7）对普通硅酸盐水泥浆体电阻率的影响

李杨1，2，彭子凌1，何真2

2023年第10期

摘要

引用本文

摘要：通过混凝土非接触式电阻率测量技术，研究了钙铝石（C12A7）掺量（0、2.5%、5.0%、7.5%）对普通硅酸盐水泥浆体电阻率及电阻率特性的影响，并计算了水泥浆体完全水化时的极限电阻率值。结果表明：C12A7能够促进离子沉淀和水化产物的生成，加快AFt向AFm的转变，使浆体较早进入硬化期和离子扩散阶段；当C12A7掺量不超过5.0%时，浆体的电阻率随C12A7掺量的增加而增大；当C12A7掺量从5.0%增加到7.5%时，浆体的电阻率反而减小。 Abstract: The effect of mayenite(C12A7) content(0, 2.5%, 5.0%, 7.5%)on the resistivity and resistivity characteristics of the ordinary Portland cement pastes was investigated by the meaning of non-contact resistivity measurement techniques for concrete, and the limiting resistivity values were calculated when the cement paste was fully hydrated. The results show that C12A7 can promote the generation of ionic precipitation and hydration products, and accelerate the transition from AFt to AFm, allowing the pastes to enter the hardening stage and ion diffusion stage earlier. When the dosage of C12A7 does not exceed 5.0%, the resistivity of the pastes increases with the increase of C12A7. When the dosage of C12A7 increases from 5.0% to 7.5%, the resistivity of the paste decreases instead.

李杨,彭子凌,何真.钙铝石（C12A7）对普通硅酸盐水泥浆体电阻率的影响[J].混凝土与水泥制品,2023(10):11-15. LI Y,PENG Z L,HE Z.Influence of mayenite(C12A7) on electrical resistivity of ordinary Portland cement pastes[J].China Concrete and Cement Products,2023(10):11-15.

水下不分散灌浆料的制备及性能研究

逄鲁峰1，黄凌苗1，*，贾广贺3，付鹏2

2023年第10期

摘要

引用本文

摘要：以普通硅酸盐水泥为主要胶凝材料制备了一种水下不分散灌浆料，选取硅酸盐水泥、硫铝酸盐水泥和无水石膏的三元胶凝体系，采用单因素试验法，研究了水料比、高分子絮凝剂掺量、聚羧酸减水剂粉末掺量这3个关键因素对水下不分散灌浆料流动度、抗分散性、抗压强度的影响，确定出了最佳掺量。结果表明：当水料比为0.14、高分子絮凝剂掺量为0.15%、聚羧酸减水剂粉末掺量为0.55%时，水下不分散灌浆料的初始流动度为258 mm，30 min流动度为256 mm；7 d、28 d水下抗压强度分别为35.76 MPa、53.09 MPa；水下抗分散性为Ⅰ，水下不分散灌浆料的水下抗分散性好，可用于C40混凝土修补加固。 Abstract: An anti-washout underwater grout material was prepared with ordinary Portland cement as the main cementitious material. The ternary cementitious system of Portland cement, sulphoaluminate cement, anhydrite was selected. The single factor test method was used to study the influence of the three key factors, namely, the water to material ratio, the content of polymer flocculant, and the content of polycarboxylate superplasticizer powder, on the fluidity, anti dispersibility, and compressive strength of anti-washout underwater grout material, and the optimal content was determined. The results show that when the water to material ratio is 0.14, the content of polymer flocculant is 0.15%, and the content of polycarboxylate superplasticizer powder is 0.55%, the initial flowability of the anti-washout underwater grout material is 258 mm, and the flowability is 256 mm after 30 min. The underwater compressive strength at 7 d and 28 d is 35.76 MPa and 53.09 MPa, respectively. The underwater anti dispersibility is I, and the anti-washout underwater grout material has good underwater anti dispersibility, which can be used for repairing and strengthening C40 concrete.

逄鲁峰,黄凌苗,贾广贺,等.水下不分散灌浆料的制备及性能研究[J].混凝土与水泥制品,2023(10):16-20. PANG L F,HUANG L M,JIA G H,et la.Preparation and performance study of anti-washout underwater grout material[J].China Concrete and Cement Products,2023(10):16-20.

刚构桥承台大体积混凝土水化热温度场模拟分析

贾毅1，2，李琪1，韦朝宽1，黄子秋1，刘勇弘 1

2023年第10期

摘要

引用本文

摘要：为研究不同因素（冷却水管直径、环境温度等）下大体积混凝土的水化放热反应，以地泗河特大桥工程为背景，建立了承台大体积混凝土模型，并对不同影响参数进行了模拟分析。结果表明：通过在大体积混凝土中设置冷却水管以减小其内部温度梯度；控制冷却水管直径0.02 m、冷却水的进水温度20 ℃、冷却水流速1.2 m3/h、冷却水管间距1.2 m纵向布置、环境温度为20 ℃时，可以有效降低大体积混凝土的水化放热。 Abstract: In order to study the hydration exothermic reaction of mass concrete under different factors(diameter of cooling water pipe, environmental temperature, etc), the mass concrete for cushion cap model was established and different influence parameters were simulated with the background of the Disi River Special Bridge Project. The results show that by setting cooling water pipes in mass concrete, the internal temperature gradient is reduced. When the diameter of the cooling water pipe is 0.02 m, the inlet temperature of the cooling water is 20 ℃, the flow rate of the cooling water is 1.2 m3/h, longitudinal arrangement of cooling water pipes with a spacing of 1.2 m, and the environmental temperature is 20 ℃, the hydration heat release of mass concrete can be effectively reduced.

贾毅,李琪,韦朝宽,等,刚构桥承台大体积混凝土水化热温度场模拟分析[J].混凝土与水泥制品,2023(10):21-26. JIA Y,LI Qi WEI C K,et al.Simulation analysis on hydration heat temperature field of mass concrete for rigid frame bridge cushion capl[J].China Concrete and Cement Products,2023(10):21-26.

寒旱-盐渍土环境下风积沙混凝土的制备及性能研究

吴俊臣1，褚菁晶1，何青虎2，牛恒茂1

2023年第10期

摘要

引用本文

摘要：针对沙漠腹地与近沙漠区农业工程、基础设施建设原材料短缺、服役环境差、混凝土耐久性能差等问题，采用西部寒旱-盐渍地区的风积沙为原材料制备了C25风积沙混凝土（ASC），得到了最优配合比，并基于微观分析研究了盐冻、干湿循环耦合作用下ASC的耐久性能。结果表明：随着风积沙掺量从0增加到100%，ASC的损伤速度越慢，其抗盐冻、干湿循环耦合作用的能力也越好；高掺量（≥60%）ASC试件抗盐冻、干湿循环耦合作用的性能良好；高掺量ASC在寒旱-盐渍土地区道路与水利工程中具有较好的适用性。 Abstract: Aiming at the shortage of raw materials for agricultural engineering and infrastructure construction in the desert hinterland and near-desert area, poor service environment and concrete durability and other problems, the sands from the cold-arid and saline areas in the west as the raw materials for the preparation of C25 aeolian sand concrete(ASC) was used, and the optimal mix proportion was obtained. The durability of ASC under the coupling effect of salt freezing and dry wet cycles was studied based on the microscopic analysis. The results show that as the content of aeolian sand increases from 0 to 100%, the damage rate of ASC slows down, and its ability to resist the coupling effects of salt freezing and dry wet cycles also improves. ASC specimens with high content(≥60%) have good performance to resist the coupling effects of salt freezing and dry wet cycles. ASC with high content has good applicability in road and hydraulic engineering in cold-arid and saline areas.

吴俊臣,褚菁晶,何青虎,等.寒旱-盐渍土环境下风积沙混凝土的制备及性能研究[J].混凝土与水泥制品,2023(10):27-31,36. WU J C,CHU J J,HE Q H,et al.Preparation and performance study of aeolian sand concrete in cold-arid and saline environment[J].China Concrete and Cement Products,2023(10):27-31,36.

含水率对不同强度等级混凝土力学性能的影响试验研究

宋致科1，张国辉2，*，顾艳霜2，李虎1，杨茂开1

2023年第10期

摘要

引用本文

摘要：通过调整不同浸泡时间（0、2、5、24、120 h）来研究C20、C30及C40混凝土的含水率，并研究了含水率对混凝土抗压强度、劈裂抗拉强度、应力-应变的影响规律。结果表明：随浸泡时间的延长，混凝土的含水率总体表现出前期快速增加，后期缓慢增加，120 h时基本达到饱和状态；混凝土的抗压强度与劈裂抗拉强度均随含水率的增加呈降低趋势，含水率的影响作用显著；在饱和状态下，混凝土的抗压强度、劈裂抗拉强度较干燥状态时的最大降幅分别达36.35%、32.36%；相对较低强度等级混凝土的力学性能对含水率的敏感性更强；随着含水率的增加，混凝土的单轴抗压及劈裂抗拉峰值应变呈下降趋势，单轴抗压及劈裂抗拉应力-应变曲线的上升段斜率逐渐增大。 Abstract: The moisture content of C20, C30 and C40 concrete was studied by adjusting different soaking times(0, 2, 5, 24, 120 h), and the influence of moisture content on the compressive strength, splitting tensile strength, and stress-strain of concrete was studied. The results show that with the extension of soaking time, the moisture content of concrete increases rapidly in the early stage and slowly in the later stage, and basically reaches saturation state at 120 h. The compressive strength and splitting tensile strength of concrete decreases with the increase of moisture content, and the effect of moisture content is significant. The compressive strength and splitting tensile strength of saturated concrete are decreased by 36.35% and 32.36% compared with those of dry concrete. The mechanical properties of relatively lower strength grade concrete are more sensitive to moisture content. With the increase of moisture content, the peak strain of uniaxial compression and splitting tensile of concrete show a downward trend, and the slope of the rising section of uniaxial compression and splitting tensile stress-strain curve increases gradually.

宋致科,张国辉,顾艳霜,等.含水率对不同强度等级混凝土力学性能的影响试验研究[J].混凝土与水泥制品,2023(10):32-36. SONG Z K,ZHANG G H,GU Y S,et al.Experimental study on the effect of moisture content on the mechanical properties of concrete with different strength grades[J].China Concrete and Cement Products,2023(10):32-36.

水泥混凝土制品

自密实混凝土在装配式预应力混凝土箱梁中的应用

丁宏1, 2，王小凡3，倪晓燕4，李强2，王鹏举3，田国选1

2023年第10期

摘要

引用本文

摘要：为制备具有高流动性、均匀性和稳定性的装配式预应力混凝土箱梁用自密实混凝土（SCC），在同一水胶比条件下，研究了m水泥∶m矿物掺合料、m水泥∶m粉煤灰、砂率和粗骨料级配对SCC工作性和抗压强度的影响。结果表明：SCC的工作性随着m水泥∶m矿物掺合料的增大变化不大；SCC的抗压强度随着砂率的增长呈先提高后降低的趋势；粗骨料级配对SCC工作性、抗压强度的影响较大，当粒径为5~10 mm和10~20 mm的粗骨料质量比为4∶6时，SCC的综合性能最佳。优选出的最佳SCC配合比已成功应用于雄安新区装配式预应力混凝土箱梁的生产。 Abstract: In order to prepare self-compacting concrete (SCC) with high fluidity, uniformity and stability used by prefabricated prestressed concrete box-beam, under same water-binder ratio, the effects of m水泥∶m矿物掺合料, m水泥∶m粉煤灰, sand ratio, and coarse aggregate grading on the workability and compressive strength of SCC were studied. The results show that the workability of SCC does not change significantly with the increase of m水泥∶m矿物掺合料. The compressive strength of SCC shows a trend of first increasing and then decreasing with the increase of sand ratio. The coarse aggregate grading has a significant impact on the workability and compressive strength of SCC. When the mass ratio of two graded coarse aggregates with particle sizes of 5~10 mm and 10~20 mm is 4∶6, the comprehensive performance of SCC is the best. The optimized SCC mix proportion has been successfully applied to the construction of prefabricated prestressed concrete box-beams in Xiong’an New Area.

丁宏,王小凡,倪晓燕,等.自密实混凝土在装配式预应力混凝土箱梁中的应用[J].混凝土与水泥制品,2023(10):37-42. DING H,WANG X F,NI X Y,et al.Application of self-compacting concrete in prefabricated prestressed concrete box-beam[J].China Concrete and Cement Products,2023(10):37-42.

22.6 m大直径沉井式车库用预制混凝土管片的模具设计与试制

王彦涛，单海燕，逄玲

2023年第10期

摘要

引用本文

摘要：根据智慧地下停车库项目的具体技术要求，设计了22.6 m大直径沉井式车库用预制混凝土管片模具，采用有限元软件对模具进行了受力分析，通过振源分析确定了振动器数量、位置，并进行了管片试制。工程试制结果表明：用该模具生产的管片强度、精度等指标均满足工程设计要求，可为相关工程提供参考。 Abstract: Based on the specific technical requirements of the smart underground parking garage project, the precast concrete pipe segment mold for the 22.6 m large diameter open casison garage was designed. The stress analysis of the mold was carried out by using finite element software, and the number and position of vibrators were determined through vibration source analysis, and the trial production of the segments was conducted. The engineering trial production results show that the strength, accuracy, and other indexes of the segments produced with this mold meet the engineering design requirements, which can provide reference for the related projects.

王彦涛,单海燕,逄玲.22.6 m大直径沉井式车库用预制混凝土管片的模具设计与试制[J].混凝土与水泥制品,2023(10):43-45. WANG Y T,SHAN H Y,PANG L.Mold design and trial production of prefabricated concrete segments for 22.6 m large diameter open caisson garage[J].China Concrete and Cement Products,2023(10):43-45.

再生混凝土仿石路缘石的设计及制备研究

高尚坤，王旻琪，刘光通

2023年第10期

摘要

引用本文

摘要：针对天然石材路缘石自然资源消耗大的问题，通过分析再生混凝土特性及混凝土路缘石的技术指标，提出了采用双层复合结构形式的再生混凝土仿石路缘石，并介绍了其模具设计、配合比设计、生产工艺。成品试验结果表明：采用再生混凝土制备的仿石路缘石的力学性能和耐久性能满足相关规范要求，且经济性较好。 Abstract: In response to the problem of high natural resource consumption of natural stone curbs, by analyzing the characteristics of recycled concrete and the technical indexes of concrete curbs, a double-layer composite structure of recycled concrete imitation stone curbs was proposed, and its mold design, mix proportion design, and production process were elaborated. The finished product tests show that the mechanical properties and durability of imitation stone curb prepared with recycled concrete meet the requirements of relevant specifications, and its economy is good.

高尚坤,王旻琪,刘光通.再生混凝土仿石路缘石的设计及制备研究[J].混凝土与水泥制品,2023(10):46-49. GAO S K,WANG M Q,LIU G G.Research on design and preparation of recycled concrete imitation stone curbs[J].China Concrete and Cement Products,2023(10):46-49.

纤维材料及制品

微生物诱导碳酸钙沉积对ECC力学性能的影响

杜鲁飞1，陈柄丞1，2，孙巍巍1，孙溪晨3，冯君3，*

2023年第10期

摘要

引用本文

摘要：基于微生物诱导碳酸钙沉积（MICP）原理，用尿素、CaCl2溶液和巴氏芽孢杆菌溶液按一定比例配制了自修复剂，通过抗压、抗折、单轴拉伸、单根纤维拉拔试验，研究了自修复剂对工程水泥基复合材料（ECC）力学性能的影响。结果表明：掺入自修复剂后，ECC试件的28 d抗压强度提高了8.96%，抗折强度提高了6.73%，极限拉伸强度提高了12.68%，纤维桥接应力提高了9.38%；由于纤维表面的MICP作用，纤维与基体界面的化学黏结能减小，摩擦黏结强度增大，纤维更容易脱黏进入滑移阶段，从而使ECC的多缝开裂特征更明显。 Abstract: Based on the principle of microbial induced carbonate precipitation(MICP), the self repairing agent was prepared by using urea, CaCl2 solution and Sporosarcina pasteurii solution in a certain proportion. The effects of the self repairing agent on the mechanical properties of engineered cementitious composites(ECC) were studied through compressive, flexural, uniaxial tension and single fiber pull-out tests. The results show that after adding self repairing agent, the 28 d compressive strength of ECC specimens is increased by 8.96%, the flexural strength is increased by 6.73%, the ultimate tensile strength is increased by 12.68%, and the fiber bridging stress is increased by 9.38%. Due to the MICP effect on the fiber surface, the chemical bonding energy between the fiber and the matrix interface decreases, the frictional bonding strength increases, and the fiber is more prone to debonding and entering the slip stage, which makes the multi seam cracking characteristics of ECC more obvious.

杜鲁飞,陈柄丞,孙巍巍,等.微生物诱导碳酸钙沉积对ECC力学性能的影响[J].混凝土与水泥制品,2023(10):50-55. DU L F,CHEN B C,SUN W W,et al.Effect of microbial induced carbonate precipitation on the mechanical properties of ECC[J].China Concrete and Cement Products,2023(10):50-55.

钢纤维混凝土的性能与纤维分布量化分析

李育林1，黄利友1，唐建军1，耿嘉庆1，陈正2，*，李静2，陈犇2，李坤磊2

2023年第10期

摘要

引用本文

摘要：研究了钢纤维体积掺量（2.5%、3.3%、4.1%）和粉煤灰掺量（10%、15%、20%）对桥梁内衬混凝土工作性及力学性能的影响，采用数字图像处理法量化分析了钢纤维在混凝土中的分布均匀度与饱和度。结果表明：随着钢纤维体积掺量的增加，混凝土的工作性基本呈降低趋势，但其抗压强度和劈裂抗拉强度增大；随着粉煤灰掺量的增加，混凝土的工作性和力学性能基本均呈下降趋势；钢纤维的分布均匀度和饱和度随着其体积掺量的增加而增大，并与混凝土的力学性能呈正相关关系。 Abstract: The effects of steel fiber volume contents(2.5%, 3.3%, 4.1%) and fly ash contents(10%, 15%, 20%) on the workability and mechanical properties of lining concrete for bridge were studied. The distribution uniformity and saturation of steel fiber in concrete were quantitatively analyzed by using digital image processing method. The results show that with the increase of steel fiber volume content, the workability of concrete shows a decreasing trend, while the compressive strength and splitting tensile strength increase. With the increase of fly ash content, the workability and mechanical properties of concrete show a decreasing trend. The distribution uniformity and saturation of steel fibers increase with the increase of steel fiber volume content, and are positively correlated with the mechanical properties of concrete.

李育林,黄利友,唐建军,等.钢纤维混凝土的性能与纤维分布量化分析[J].混凝土与水泥制品,2023(10):56-60. LI Y LHUANG L Y,TANG J J,et al.Performance and quantitative analysis of fiber distribution of steel fiber reinforced concrete[J].China Concrete and Cement Products,2023(10):56-60.

房建材料及制品

高强钢筋页岩陶粒混凝土柱偏心受压性能研究及损伤分析

祁明涛，邵永健*，洪宇

2023年第10期

摘要

引用本文

摘要：为了解高强钢筋页岩陶粒混凝土柱偏心受压性能及其损伤演变，对7个配置HRB500钢筋和1个配置HRB400钢筋的页岩陶粒混凝土柱试件进行了偏心受压试验，研究了钢筋强度、页岩陶粒混凝土强度、偏心距和长细比对其受压性能以及损伤演化的影响。结果表明：高强钢筋页岩陶粒混凝土柱偏心受压构件破坏分为大偏心受压破坏、小偏心受压破坏两种；随着页岩陶粒混凝土强度的提高、偏心距和长细比的减小，试件的跨中侧向挠度均减小；偏心距对试件损伤影响较大，偏心距越小，试件的损伤程度越小。 Abstract: In order to study the eccentric compression performance and damage evolution of high-strength reinforced shale ceramide concrete columns, the eccentric compression tests were carried out on seven shale ceramide concrete column specimens with HRB500 reinforcement and one with HRB400 reinforcement to explore the influence of reinforcement strength, shale ceramide concrete strength, eccentric distance and slenderness ratio on its compression performance and damage evolution. The results show that the eccentric compression member damage of high-strength reinforced shale ceramide concrete column has two types, compression member with large eccentricity and compression member with small eccentricity. As the shale ceramide concrete strength increases, eccentric distance and slenderness ratio decrease, the mid-span lateral deflection of the specimen decreases. The eccentric distance has the greater influence on the specimen damage, and the smaller the eccentric distance, the smaller the damage degree of the specimen.

祁明涛,邵永健,洪宇.高强钢筋页岩陶粒混凝土柱偏心受压性能研究及损伤分析[J].混凝土与水泥制品,2023(10):61-65,71. QI M T,SHAO Y J,HONG Y.Research on eccentric compression performance of high-strength reinforced shale ceramide concrete columns and its damages[J].China Concrete and Cement Products,2023(10):61-65,71.

赤泥对碱激发轻质泡沫混凝土性能的影响研究

胡忠帅，董建统，刘志勇*

2023年第10期

摘要

引用本文

摘要：为探究赤泥部分取代矿渣对碱激发泡沫混凝土性能及其微观机理的影响，以赤泥-硅酸盐水泥-矿渣三元复合胶凝材料为泡沫混凝土基体，采用氢氧化钠和硅酸钠溶液作为激发剂，通过纳米改性发泡剂进行物理发泡，制备了不同赤泥取代率的轻质泡沫混凝土（密度等级为A04），并采用激光位移传感器、电子显微镜、X射线衍射仪及热重分析仪进行了检测和表征。结果表明：赤泥的掺入不利于泡沫混凝土的前期稳定性，当赤泥取代率为20%~40%时，泡沫混凝土前90 min的最终沉降量增量较小；赤泥的掺入会降低泡沫混凝土流动度和抗压强度；当赤泥掺量为30%时，泡沫混凝土的抗压强度下降速率最低。 Abstract: In order to study the replacement of mineral powder with red mud on the macroscopic properties and microscopic mechanism of alkali activited foam concrete, the lightweight foam concrete(its density class is A04) with different contents of red mud was prepared by using red mud-Portland cement-slag terpolymer as the foam concrete matrix, the sodium hydroxide and sodium silicate solutions were used as activators, the nano-modified foaming agent was used as physical foaming. The laser displacement sensor, electron microscope, X-ray diffractometer and thermogravimetric analyzer were used to detect and characterize. The results show that the replacement of mineral powder with red mud is not conducive to the early stability of foam concrete, but when the content of red mud increases from 20% to 40%, the increment of final settlement in the first 90 min of foam concrete is small. The replacement of mineral powder with red mud will reduce the fluidity and compressive strength of foam concrete. When the content of red mud is 30%, the compressive strength of foam concrete will decrease at the lowest rate.

胡忠帅,董建统,刘志勇.赤泥对碱激发轻质泡沫混凝土性能的影响研究[J].混凝土与水泥制品,2023(10):66-71. HU Z S,DONG J T,LIU Z Y.Study on the effect of red mud on properties of alkali activated lightweight foam concrete[J].China Concrete and Cement Products,2023(10):66-71.

标准解读

JC/T 2723—2022《预应力混凝土实心方桩》标准解读

蒋元海

2023年第4期

摘要

引用本文

为便于 JC/T 2723—2022《预应力混凝土实心方桩》的使用方准确理解标准条款的具体含义，正确贯彻实施标准条款的具体要求和规定，简述了该标准的编制背景、编制目的和意义，解释说明了标准条文的具体内容，并指出了标准实施过程中应注意的事项。 In order to facilitate the user of JC/T 2723—2022 Prestressed Concrete Solid Square Pile to accurately understand the specific meaning of the standard terms and correctly implement the specific requirements and provisions of the standard terms, the preparation background, purpose and significance of the JC/T 2723—2022 are briefly described, the specific contents of the standard provisions are explained in detail, and the problems that should be paid attention to in the implementation process are put forward.

蒋元海.JC/T 2723—2022《预应力混凝土实心方桩》标准解读[J].混凝土与水泥制品,2023(4):81-84. JIANG Y H.Interpretation on JC/T 2723—2022 Prestressed Concrete Solid Square Pile[J].China Concrete and Cement Products,2023(4):81-84.

检测及试验方法研究

灌浆料测强曲线对龄期与抗压强度的适用性研究

赵建华1，谢慧晟2，张建宇1，凌良建2，周红燕3，吕嘉2

2023年第4期

摘要

引用本文

选择不同灌浆料制作了标准试件和模拟孔道PVC管试件，根据DB32/T 3754—2020《装配整体式混凝土结构检测技术规程》的要求，基于标准试件的抗压强度和模拟孔道PVC管试件的表面硬度建立了灌浆料测强曲线，分析了测强曲线对灌浆料龄期和抗压强度的适用性。结果表明：在灌浆料龄期≥14 d或抗压强度≥60 MPa的情况下，采用DB32/T 3754—2020中的方法建立的灌浆料测强曲线的适用性更强，可为实际工程中不同灌浆料实体抗压强度检测时间的选取提供参考。 Different sleeve grouting materials were selected to make standard test pieces and PVC pipe test pieces with simulated channels. According to the requirements of DB32/T 3754—2020 Technical Specification for Inspection of Monolithic Precast Concrete Structure, the strength curve of the grouting material was established based on the compressive strength of standard test pieces and the surface hardness of PVC pipe test pieces with simulated channels, and the applicability of the strength curve to the age and compressive strength was analyzed. The results show that when the age of grouting material is ≥14 days or the compressive strength of grouting material is ≥60 MPa, the strength test curve of grouting material established by the method in DB32/T 3754—2020 is more applicable, which can provide a reference for the selection of the testing time of the solid compressive strength of different grouting materials in practical projects.

赵建华,谢慧晟,张建宇,等.灌浆料测强曲线对龄期与抗压强度的适用性研究[J].混凝土与水泥制品,2023(4):85-87,92. ZHAO J H,XIE H S,ZHANG J Y,et al.Study on the Applicability of Grouting Material Strength Curve to Age and Compressive Strength[J].China Concrete and Cement Products,2023(4):85-87,92.

节能降碳

隧道洞渣机制砂的颗粒形貌参数对砂浆性能的影响

韩斌，赵爽，吴庆勇，王伟，曾鲁平，陈俊松

2023年第10期

摘要

引用本文

摘要：研究了隧道洞渣机制砂的细度模数（2.11~3.09）、石粉含量（3%~9%）、针片状颗粒的粒径（0.80~4.75 mm）与含量（0~20%）对机制砂空隙率和砂浆表观密度、流动度、抗压强度的影响。结果表明：随着细度模数的增加，机制砂的空隙率先减小后增大，砂浆的流动度、表观密度和28 d抗压强度先增大后减小，推荐细度模数为2.70；随着石粉含量的增加，机制砂的空隙率减小，砂浆的流动度、表观密度和28 d抗压强度降低，推荐石粉含量为3%；随着针片状颗粒粒径的增加，机制砂的空隙率增大，砂浆的流动度、表观密度和28 d抗压强度降低，推荐针片状颗粒粒径为0.80~1.60 mm；随着针片状颗粒含量从0增至20%，机制砂的空隙率增大，砂浆的流动度和表观密度降低，28 d抗压强度变化不大。 Abstract: The effects of fineness module(2.11~3.09), stone powder content(3%~9%) and particle size(0.80~4.75 mm) and content(0~20%) of needle flake particles of tunnel slag manufactured sand on the porosity of manufactured sand and the apparent density, fluidity and compressive strength of mortar were studied. The results show that as the fineness module increases, the porosity of manufactured sand first decreases and then increases, while the fluidity, apparent density and 28 d compressive strength of mortar first increase and then decrease, and the recommended fineness module is 2.70. With the increase of stone powder content, the porosity of manufactured sand decreases, and the fluidity, apparent density and 28 d compressive strength of mortar decrease, and the recommended stone powder content is 3%. As the particle size of needle flake particles increases, the porosity of manufactured sand increases, while the fluidity, apparent density and 28 d compressive strength of mortar decrease, and the recommended particle size of needle flake particles is 0.80~1.60 mm. As the content of needle flake particles increases from 0 to 20%, the porosity of manufactured sand increases, the fluidity and apparent density of mortar decrease, and there is little change in the 28 d compressive strength.

韩斌,赵爽,吴庆勇,等.隧道洞渣机制砂的颗粒形貌参数对砂浆性能的影响[J].混凝土与水泥制品,2023(10):72-77. HAN B,ZHAO S,WU Q Y,et al.The effect of particle morphology parameters of tunnel slag manufactured sand on performance of mortar[J].China Concrete and Cement Products,2023(10):72-77.

镍渣植生混凝土的制备及其性能研究

卞维宏1，纪小敏2，朱宝贵2

2023年第10期

摘要

引用本文

摘要：利用镍渣作为粗骨料制备了镍渣植生混凝土，研究了镍渣粒径、水灰比、骨灰比对镍渣植生混凝土抗压强度、孔隙率、透水系数和pH值的影响，分析了不同养护方式（自然养护、喷洒硫酸亚铁溶液并覆膜保湿养护）下，狗牙根和果岭草在镍渣植生混凝土中的生长情况。结果表明：随着水灰比的增加，试件的抗压强度先增大后减小，孔隙率和透水系数增大，pH值减小；随着镍渣粒径的减小，试件的抗压强度增大，孔隙率和透水系数减小，pH值基本不变；随着骨灰比的增大，试件的抗压强度减小，孔隙率和透水系数增大，pH值基本不变；与自然养护相比，喷洒硫酸亚铁溶液并覆膜保湿养护后，镍渣植生混凝土的碱度降低，狗牙根和果岭草的生长情况较好，其中，狗牙根的发芽情况和生长高度比果岭草更好。 Abstract: Nickel slag green-growing concrete was prepared by using nickel slag as coarse aggregates. The effects of nickel slag particle size, water-cement ratio, and aggregate-cement ratio on the compressive strength, porosity, permeability coefficient, and pH value of nickel slag green-growing concrete were studied. The growth of bermuda grass and green grass in nickel slag green-growing concrete was analyzed under different curing methods (natural curing, spraying ferrous sulfate solution and covering with film for moisture curing). The results show that as the water-cement ratio increases, the compressive strength of the specimen first increases and then decreases, the porosity and permeability coefficient increase, and the pH value decreases. As the particle size of nickel slag decreases, the compressive strength of the specimen increases, the porosity and permeability coefficient decrease, and the pH value remains basically unchanged. As the aggregate-cement ratio increases, the compressive strength of the specimen decreases, the porosity and permeability coefficient increase, and the pH value remains basically unchanged. Compared with natural curing, spraying ferrous sulfate solution and covering with film for moisture curing results in a decrease in alkalinity of nickel slag planting concrete, and better growth of bermuda grass and green grass. Among them, bermuda grass has better germination and growth height than those of green grass.

卞维宏,纪小敏,朱宝贵.镍渣植生混凝土的制备及其性能研究[J].混凝土与水泥制品,2023(10):78-81,86. BIAN W H,JI X M,ZHU B G.Study on preparation and performance of nickel slag green-growing concrete[J].China Concrete and Cement Products,2023(10):78-81,86.

锂渣基辅助胶凝材料的制备及其对混凝土性能的影响

肖波，张荣华*，胡卓强

2023年第10期

摘要

引用本文

摘要：制备了锂渣粉-钛矿渣粉、锂渣粉-花岗岩粉2种复合掺合料，测试了其活性和流动性，研究了其对混凝土工作性和力学性能的影响，确定了合适的m锂渣粉∶m钛矿渣粉、m锂渣粉∶m花岗岩粉。基于此，为了便于实际工程应用，制备了2种锂渣基辅助胶凝材料Z1、Z2。结果表明：综合考虑复合掺合料的活性、流动性及其对混凝土工作性和力学性能的影响，推荐m锂渣粉∶m钛矿渣粉、m锂渣粉∶m花岗岩粉均为6∶4；Z1、Z2分别满足相关标准中Ⅱ级、Ⅲ级复合掺合料的要求，且其等质量取代100%矿粉对混凝土的工作性和力学性能影响不大，同时能提高混凝土的耐久性能。 Abstract: Two composite admixtures (lithium slag powder-titanium slag powder and lithium slag powder-granite powder) were prepared, and their activity and flowability were tested, and the effects of the composite admixtures on the workability and mechanical properties of concrete were studied. Based on this, the suitable mlithium slag powder∶mtitanium slag powder and mlithium slag powder∶mgranite powder were determined. Two lithium slag based supplementary cementitious materials Z1 and Z2 were prepared for practical engineering applications. The results show that considering the activity, flowability of the composite admixture and its impact on the workability and mechanical properties of concrete, it is recommended that both mlithium slag powder∶mtitanium slag powder and mlithium slag powder∶mgranite powder be 6∶4. Z1 and Z2 meet the requirements of Class Ⅱ and Class Ⅲ composite admixtures in relevant standards respectively, and replacing 100% mineral powder with Z1 or Z2 has little impact on the workability and mechanical properties of concrete, and can improve the durability of concrete.

肖波,张荣华,胡卓强.锂渣基辅助胶凝材料的制备及其对混凝土性能的影响[J].混凝土与水泥制品,2023(10):82-86. XIAO B,ZHANG R H,HU Z Q.Preparation of lithium slag based supplementary cementitious materials and its impact on concrete performance[J].China Concrete and Cement Products,2023(10):82-86.

花岗岩锯泥对C80管桩混凝土性能的影响

李松1，胡新军1，梁寒琴1，万惠文2，沈聪2

2023年第10期

摘要

引用本文

摘要：将适量花岗岩锯泥分别与机制砂或河砂复配制成了混合砂，并等质量替代100%细骨料，研究了标准养护条件下花岗岩锯泥等质量替代100%粉煤灰对C30、C40混凝土工作性和力学性能的影响，对比分析了常压蒸汽养护和压蒸养护条件下，花岗岩锯泥等质量替代100%石英粉对C80管桩混凝土力学性能的影响，并进行了微观分析。结果表明：在标准养护条件下，花岗岩锯泥对C30、C40混凝土的坍落度和抗压强度影响较小；在常压蒸汽养护条件下，掺入花岗岩锯泥后，C80管桩混凝土的抗压强度变化不大，花岗岩锯泥呈惰性，主要起填充作用；与常压蒸汽养护条件相比，压蒸养护条件下C80管桩混凝土的抗压强度大幅提高，石英粉和花岗岩锯泥具有填充效应和一定的活性效应，其中的SiO2会与钙质材料发生水热合成反应，生成C-S-H（B）型水化硅酸钙和托贝莫来石。 Abstract: The suitable content of granite saw-mud was mixed with machine-made sand or river sand to produce mixed sand, and replacing all fine aggregates. The effects of replacing all fly ash with granite saw-mud under standard curing conditions on the workability and mechanical properties of C30 and C40 concrete were studied. The effects of replacing all quartz powder with granite saw-mud under atmospheric steam curing and autoclave curing conditions on the mechanical properties of C80 pipe pile concrete were compared and analyzed, and the microscopic analysis was conducted. The results show that under standard curing conditions, the impact of granite saw-mud on the slump and compressive strength of C30 and C40 concrete is relatively small. Under atmospheric steam curing conditions, the compressive strength of C80 pipe pile concrete show little change after adding granite saw-mud, and the granite saw-mud is in an inert state and mainly plays a filling role. Compared with atmospheric steam curing conditions, the compressive strength of C80 pipe pile concrete under autoclave curing conditions is significantly improved, and the quartz powder and granite saw-mud have filling and certain activity effects, and the SiO2 in them will undergo hydrothermal synthesis reaction with calcium materials to generate C-S-H(B) type hydrated calcium silicate and tobermorite.

李松,胡新军,梁寒琴,等.花岗岩锯泥对C80管桩混凝土性能的影响[J].混凝土与水泥制品,2023(10):87-89.94. LI S,HU X J,LIANG H Q,et al.Effect of granite saw-mud on performance of C80 pipe pile concrete[J].China Concrete and Cement Products,2023(10):87-89.94.

复合改性再生粗骨料对混凝土性能的影响

赖泽成

2023年第10期

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摘要：通过加热和颗粒整形对再生粗骨料进行了复合改性处理，对比分析了未改性和改性再生粗骨料的性能，研究了再生粗骨料的掺量对混凝土工作性和抗压强度的影响，优选出了最佳再生粗骨料类型和掺量，并在此基础上，研究了粉煤灰掺量对再生混凝土耐久性能的影响。结果表明：经过复合改性处理后，再生粗骨料的性能得到了强化。随着再生粗骨料掺量的增加，混凝土的坍落度、扩展度和抗压强度基本呈减小趋势；掺改性再生粗骨料混凝土（MRAC）的工作性和抗压强度整体上比掺未改性再生粗骨料混凝土（RAC）的好；综合考虑工作性和抗压强度，改性再生粗骨料的最佳掺量为30%；随着粉煤灰掺量的增加，MRAC的氯离子迁移系数和碳化深度均先减小后增大，推荐粉煤灰掺量为20%~30%。 Abstract: The composite modification treatment of recycled coarse aggregate was carried out through heating and particle shaping, and the performance of unmodified and modified recycled coarse aggregate was compared and analyzed. The influence of the content of recycled coarse aggregate on the workability and compressive strength of concrete was studied, and the optimal type and content of recycled coarse aggregate were selected. On this basis, the effect of fly ash content on the durability of recycled concrete was studied. The results show that the performance of recycled coarse aggregate has been strengthened after composite modification. With the increase of recycled coarse aggregate content, the slump, slump-flow and compressive strength of concrete show a decreasing trend generally. The workability and compressive strength of modified recycled coarse aggregate concrete(MRAC) are generally better than those of unmodified recycled coarse aggregate concrete(RAC). Considering workability and compressive strength comprehensively, the optimal content of modified recycled coarse aggregate is 30%. With the increase of fly ash content, the chloride ion migration coefficient and carbonization depth of MRAC first decrease and then increase, and the recommended fly ash content is 20%~30%.

赖泽成.复合改性再生粗骨料对混凝土性能的影响[J].混凝土与水泥制品,2023(10):90-94. LAI Z C.Effect of composite modified recycled coarse aggregates on performance of concrete[J].China Concrete and Cement Products,2023(10):90-94.

石材废浆的性能及其在薄层砂浆中的应用研究

陈洪钢1，詹镇峰2，彭鸿涛3

2023年第10期

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摘要：将石材（大理石、花岗岩）加工过程中产生的废浆经烘干、粉磨后得到石粉，测试了石粉的颗粒特性，研究了不同石粉掺量（0~30%）下，M5强度等级薄层砂浆的最低纤维素醚掺量，在此基础上，分析了石粉掺量对砂浆性能的影响。结果表明：大理石粉的矿物成分主要为方解石，花岗岩粉的矿物成分主要为石英、长石和云母；两种石粉的粒径分布范围主要在0～30 μm之间，其中，大理石粉整体上较细且均匀，而花岗岩粉中存在一定数量棱角明显的大颗粒；在砂浆保水率满足≥99%的条件下，石粉掺量越大，最低纤维素醚掺量越小；在最低纤维素醚掺量下，石粉掺量越大，砂浆的14 d黏结强度越小，掺大理石粉砂浆的28 d抗压强度越小，掺花岗岩粉砂浆的28 d抗压强度越大；掺入适量石粉降低了砂浆的28 d收缩率。 Abstract: The waste slurry generated during the stone(marble and granite) processing was dried and ground to obtain stone powder, and the particle characteristics of the stone powder were tested, and the minimum cellulose ether content of M5 strength grade thin layer mortar was studied under different stone powder contents (0~30%). Based on this, the influence of stone powder content on the mortar performance was analyzed. The results show that the mineral composition of marble powder is mainly calcite, while the mineral composition of granite powder is mainly quartz, feldspar and mica. The particle size distribution range of two types of stone powder mainly ranges from 0 to 30 μm, and marble powder is generally fine and uniform, while granite powder contains a certain number of large particles with obvious edges and corners. When the water retention rate of mortar is ≥99%, the higher the content of stone powder, the smaller the minimum content of cellulose ether. At the lowest content of cellulose ether, the higher the content of stone powder, the lower the 14 d bonding strength of the mortar, the lower the 28 d compressive strength of the mortar mixed with marble powder, and the higher the 28 d compressive strength of the mortar mixed with granite powder. Adding an appropriate content of stone powder reduces the 28 d shrinkage rate of the mortar.

陈洪钢,詹镇峰,彭鸿涛.石材废浆的性能及其在薄层砂浆中的应用研究[J].混凝土与水泥制品,2023(10):95-99. CHEN H G,ZHAN Z F,PENG H T.Study on properties of stone waste slurry and its application in thin layer mortar[J].China Concrete and Cement Products,2023(10):95-99.

电解锰渣对混凝土抗压强度及孔结构的影响

黄真江1，赵瑜1，侯俊宇2，张坤1，余冰洋1

2023年第10期

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摘要：研究了电解锰渣等质量替代0、10%、20%、30%、40%、50%水泥对混凝土抗压强度的影响，采用核磁共振技术分析了掺电解锰渣混凝土微观孔隙的发育规律。结果表明：掺入电解锰渣后，混凝土的抗压强度降低；随着龄期的延长，掺电解锰渣混凝土的抗压强度基本呈先小幅降低后增大的趋势；随着电解锰渣掺量的增加，T2谱图的面积增大，试件的孔隙率增大。 Abstract: The effects of replacing 0, 10%, 20%, 30%, 40% and 50% cement with electrolytic manganese slag on the compressive strength of concrete were studied, and the development law of micro pores in concrete mixed with electrolytic manganese slag was analyzed by using nuclear magnetic resonance technology. The results show that after adding electrolytic manganese slag, the compressive strength of concrete decreases. With the increase of age, the compressive strength of concrete mixed with electrolytic manganese slag shows a trend of initially decreasing slightly and then increasing. As the content of electrolytic manganese slag increases, the area of T2 spectrum increases, and the porosity of the specimen increases.

黄真江,赵瑜,张坤,等.电解锰渣对混凝土抗压强度及孔结构的影响[J].混凝土与水泥制品,2023(10):100-102. HUANG Z J,ZHAO Y,ZHANG K,et al.Effect of electrolytic manganese slag on compressive strength and pore structure of concrete[J].China Concrete and Cement Products,2023(10):100-102.

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《混凝土与水泥制品》“3D打印混凝土”与“节能利废混凝土”专题征稿启事

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珊瑚碎屑混凝土的强度特性及破坏形态分析

王磊1,2，范蕾1,2

2015年第1期

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摘要：针对目前对珊瑚碎屑混凝土的力学机理尚不清晰这一问题，对不同龄期和水灰比的珊瑚混凝土试块进行了试验研究。试验结果表明，珊瑚混凝土具有早强、快硬的特点；同时，当水灰比减小到一定程度后，单纯减小水灰比并不能明显提高珊瑚混凝土的抗压强度。本文从材料特性、界面特性以及龄期和水灰比等方面着手，对珊瑚混凝土的强度特性作了详细分析，并介绍了珊瑚混凝土的破坏形态，从而可为珊瑚碎屑应用于海岛混凝土工程提供一定的参考依据。 Abstract: Currently, the mechanical mechanism of coral debris concrete is not well understood, so the research on coral concrete test block in different age and water cement ratio is carried out. The test results show that coral concrete has the characteristics of fast strengthening and hardening, and when the water cement ratio decreases to a certain extent, simply reducing the water cement ratio could not result in obvious additions of compressive strength of coral concrete. From the aspects of material properties, interface properties，age and water cement ratio, the strength characteristics of the coral concrete are analyzed in detail, and the failure pattern is introduced, which can provide reference for application of coral debris in island concrete engineering.

王磊,范蕾. 珊瑚碎屑混凝土的强度特性及破坏形态分析[J].混凝土与水泥制品,2015(1):1-4. WANG L,FAN L.Strength Characteristic and Failure Pattern Analysis on Coral Debris Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(1):1-4.

装配式结构用高强套筒灌浆料性能试验研究

汪秀石，杨智良，吴照学

2015年第2期

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摘要：研究了装配式结构用高强套筒灌浆料的性能，通过试配并进行了流动度、强度和膨胀性试验，优选出了优化配合比。同时基于优化配合比进行了水胶比、减水剂掺量和膨胀剂掺量对高强套筒灌浆料性能影响的研究。试验结果表明，随着水胶比（W/B）增加，流动度逐渐增大，但强度随W/B增加呈现明显降低趋势；减水剂可有效改善流动度，而当掺量过多时对强度有一定的影响；膨胀率随膨胀剂掺量增加呈现增长趋势，但当掺量小于8.0%时，膨胀效果较差，掺量大于12.0%时，对流动度和强度产生不利影响。 Abstract: The properties of high-strong cementitious grout for prefabricated concrete structure are studied, and the optimum mix proportion is elected by the tests of fluidity, strength and expansibility. The roles of W/B and the content of superplasticizer or expanders in high-strong cementitious grout for coupler are researched respectively based on the optimum mix proportion. The test results show that the fluidity of the grout increases with the increasing of W/B, but its strength has significantly decreasing trend; the fluidity of the grout can be improved effectively by superplasticizer, but its strength will decrease if superplasticizer content is excessive; expansion rate of the grout increases with the increasing of expanders agent content, but the expansibility is poor when the content is less than 8.0%, and it has an adversely affect on the liquidity and strength of the grout when the content is greater than 12.0%.

汪秀石,杨智良,吴照学.装配式结构用高强套筒灌浆料性能试验研究[J].混凝土与水泥制品,,2015(2):65-68. WANG X S,YANG Z L,WU Z X.Experimental Research on Performance of High-strong Cementitious Grouting for Prefabricated Concrete Structure[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(2):65-68.

再生粗骨料强化处理工艺对再生混凝土性能的影响

郭远新，李秋义，孔哲，岳公冰，韩帅

2015年第6期

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摘要：分别采用物理强化、化学强化和物理-化学复合强化三种不同的强化方式对简单破碎再生粗骨料进行强化处理，并采用100%取代天然碎石制备再生粗骨料混凝土，研究了不同强化处理后的再生粗骨料对混凝土工作性能、力学性能、抗渗透性能和抗碳化性能的影响。结果表明，经过强化处理的再生粗骨料混凝土的各项性能均有不同程度的提高，其中经二次物理强化处理后的再生粗骨料混凝土的用水量较天然碎石混凝土仅增加了6kg/m3，其抗压强度也达到最高值，接近于天然碎石混凝土；经二次物理强化和化学浸渍复合强化处理后的再生混凝土氯离子扩散系数降低了13.6%；三种不同的强化方式处理后，再生混凝土的碳化深度和碳化速度均有所降低。 Abstract: Three kinds of different strengthening technologies of physical enhancement, chemical enhancement and physical-chemical compound enhancement to strengthen the simple crushing recycled coarse aggregate are adopted, with 100% replaced natural gravel preparation of recycled coarse aggregate concrete, and the influences of the recycled coarse aggregate of different strengthening treatment on the working performance, mechanical properties, penetration resistance and carbonation resistance of concrete are studied. The research results show that, through strengthening treatment, recycled coarse aggregate concrete properties are improved to different degrees, the water consumption of recycled coarse aggregate concrete after the secondary physical strengthen treatment is only increased by 6kg/m3 than that of natural gravel concrete. The compressive strength also reached the highest value, close to the natural gravel concrete. The chloride ion diffusion coefficient of recycled concrete after the secondary physical-chemical compound strengthening treatment is reduced by 13.6%. The depth of carbonation and carbonation velocity decrease after three kinds of different strengthening treatments.

郭远新,李秋义,孔哲,等.再生粗骨料强化处理工艺对再生混凝土性能的影响[J].混凝土与水泥制品,2015(6):11-17. GUO Y X,LI Q Y,KONG Z,et al.Influence of Strengthening Treatment Technology of Recycled Coarse Aggregate on Performance of Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(6):11-17.

无砂再生透水混凝土配合比设计

张松涛1，贾欣悦2，宋卓1，贾艳东1

2016年第12期

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张松涛,贾欣悦,宋卓,等.无砂再生透水混凝土配合比设计[J].混凝土与水泥制品,2016(12):6-12. ZHANG S T,JIA X Y,SONG Z,et al.Design on Mix Proportion of No-fines Pervious Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(12):6-12.

清水混凝土概念、研究现状、存在问题及配合比设计方综述

郭伟1，路林海2，王龙志3，崔鑫3，王桂玲4，张海霞3

2016年第10期

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摘要：20世纪90年代后期以来，清水混凝土研究及工程应用得到了长足发展，许多城市建成了清水混凝土标志性工程。为了更好地促进清水混凝土研究的深入、工程质量的提高，对清水混凝土的概念、研究现状、存在问题及现有的清水混凝土配合比设计方法进行了系统地梳理、总结。通过对清水混凝土现状的研究，可使相关领域技术人员认识到清水混凝土发展中存在的不足、明确清水混凝土的研究方向，以实现清水混凝土技术研究水平的再提高，有力地支持清水混凝土工程应用的进一步推广。 Abstract: Since the late 1990s, research and application of fair-faced concrete has made considerable progress, many cities built landmark projects of fair-faced concrete. In order to better promote the study in-depth and the engineering quality improvement of fair-faced concrete, the concept, research status, existing problems and mixture design methods of fair-faced concrete are systematically reviewed and summarized. Through the above study of fair-faced concrete, the relevant technicians recognize the lack of fair-faced concrete in the development and realize a clear research direction, in order to improve research level, strongly support further promotion of fair-faced concrete in engineering applications.

郭伟,路林海,王龙志,等.清水混凝土概念、研究现状、存在问题及配合比设计方法综述[J].混凝土与水泥制品,2016(10):23-27. GUO W,LU L H,WANG L Z,et al.Summary for Concept, Research Status, Existing Problems and Mix Proportion Design of Fair-faced Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(10):23-27.

新型装配式建筑构件生产及其施工技术的研究与应用

范玉1,4，徐华2，黄新3，黄继战4，马北京4

2015年第12期

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摘要：通过对建筑PC构件的设计、生产、施工进行的研究，对建筑PC构件进行了再设计及优化，确定了合理的PC构件生产及其施工工艺方案，并对影响PC构件质量的相关因素进行了分析。 Abstract: Through the research on design of PC component, production and construction, construction PC component is carried out for re-design and optimization. The reasonable PC component production and construction technology program are determined, and factors affecting the quality of PC are analyzed.

范玉,徐华,黄新,等.新型装配式建筑构件生产及其施工技术的研究与应用[J].混凝土与水泥制品,2015(12):87-89. FAN Y, XU H,HUANG X,et al.Research and Application of Production for New Type of Prefabricated Construction Component and Its Construction Technology[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):87-89.

石墨烯纳米片对水泥基复合材料力学性能的影响

王辉，刘爱红，李航

2015年第12期

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摘要：采用球磨法将石墨烯纳米片分散在水泥基体中，研究了石墨烯纳米片掺量对水泥基材料抗折强度和抗压强度的影响。实验结果表明，适量的石墨烯纳米片可均匀分散在水泥基体中，通过桥联效应和拔出效应对水泥基材料起增强增韧作用，当石墨烯纳米片掺量为0.04%时，石墨烯纳米片与水泥基体界面结合良好，没有明显过渡层，试件3d抗折强度和抗压强度分别提高了22.84%和23.61%。 Abstract: Graphene nanoplatelets (GNPs) were dispersed in the cement matrix by milling method. The effect of GNPs with different contents on the flexural strength and compressive strength of composites were studied. The results showed that well dispersed GNPs improved the mechanical properties of cement composites, owing to GNPs excellent pulling-out and bridging capability. When the GNPs content was 0.04%, the mechanical properties of cement composites were increased obviously. Its flexural and compressive strength increased by 22.84% and 23.61% respectively compared with the referee sample after curing 3 days. The interface between graphene nanoplatelets and cement was bonded well, with no obvious transition layer.

王辉,刘爱红,李航.石墨烯纳米片对水泥基复合材料力学性能的影响[J].混凝土与水泥制品,2015(12):25-27. WANG H,LIU A H,LI H.Influence of Graphene Nanoplatelets on Mechanical Properties of Cement-based Composites[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):25-27.

大型智能PC构件自动化生产线简介

孙红1，孙健1，吴玉厚1，赵凯军2

2015年第3期

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摘要：根据混凝土工厂化生产的需要，阐述了大型智能PC构件生产线的组成部分、工艺过程和技术重点；分析了该生产线中蕴含的微观物流、信息采集、分布式控制及多智能体的协同过程，总结了PC构件生产线的优点和技术创新突破点，可为大型智能PC构件全自动生产线的研制提供理论基础和技术依据。 Abstract: According to the needs of the concrete factory production, the large scale intelligent automatic PC production line the technological process and technical keys of PC component are introduced, the cooperative process of microscopic logistics, information acquisition, distributed control and multi-agent systems are analyzed, the advantages and technology innovation of PC components production line are summarized, which can provide theoretical basis and technical basis for large scale intelligent automatic production line of PC components.

孙红,孙健,吴玉厚,等.大型智能PC构件自动化生产线简介[J].混凝土与水泥制品,2015(3):45-48. SUN H,SUN J,WU Y H,et al.Introduction of Large Scale Intelligent PC Automatic Production Line[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(3):45-48.

建筑垃圾再生微粉的研究现状

毛新奇1,2，屈文俊1，朱鹏1

2015年第8期

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摘要：建筑垃圾再生微粉各项性能的研究是推进建筑垃圾资源化的重要基础。根据近年来国内关于再生微粉的主要研究成果，对材料来源、制备工艺、工作性能、力学性能和耐久性能等方面进行了综述，并对相关的影响因素进行了探讨分析。 Abstract: Research on the properties of utilization regeneration of powder for construction waste is the important foundation of resource utilization of construction waste. Based on the recent domestic research on recycled powder, material source, manufacturing process, workability, mechanical properties and the durability are reviewed. Besides, the related influence factors are discussed and analyzed.

毛新奇,屈文俊,朱鹏.建筑垃圾再生微粉的研究现状[J].混凝土与水泥制品,2015(8):89-93. MAO X Q,QU W J,ZHU P.Study Status of Recycled Powder for Construction Waste[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(8):89-93.

再生粗骨料及再生混凝土性能研究进展

甘福1，周脉席1,3，濮琦2

2018年第9期

摘要

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摘要：结合国内外再生粗骨料混凝土的研究现状，综述了再生粗骨料性能、再生粗骨料混凝土性能、再生混凝土改性方法及改性后的混凝土性能等方面内容，展望了再生粗骨料及再生混凝土未来研究方向。 Abstract: Combining the study of recycled coarse aggregate concrete at home and abroad, the property of recycled coarse aggregate, the performance of recycled coarse aggregate concrete, the modified method of recycled concrete and the performance of modified concrete are reviewed, and the fature research direction on recycled coarse aggregate and recycled concrete is prospected.

甘福,周脉席,濮琦.再生粗骨料及再生混凝土性能研究进展[J].混凝土与水泥制品,2018(9):102-107. GAN F,ZHOU M X,PU Q.Research Progress of Performance of Recycled Coarse Aggregate and Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2018(9):102-107.

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